Hi Windey, sorry this is off topic but there is no way to directly message you and the other thread is now closed so cant post replies (Cordless vacuum S latch? - #4 by carverofchoice).
Out of curiosity, did you ever 3d print the latch? I have the same issue and before going down the road of superglueing is, I wanted to know if you were able to fix it
Could not justify replacing the entire power head that will result in the same poorly designed bearing failure. I solved this with 3d printing a new roller brush end and bearing holder cap. Used a pretty standard 6900 sealed bearing I had on hand. I had to cut out the end plug in the roller brush that holds the current small bearing. I did not glue in the new plug (just friction fit in case I need to make changes). I left a hole in the cap so when you remove the brush you can press the brush out of the bearing with your thumb. See images.
If this solution is working out for you and you have a model that you’re willing to share with the community, then please feel free to post to Tips & Tricks with cordless-vacuum and 3d-printing tags and a download link to your model. Any additional information you’d care to share (photos, etc.), would also be welcome!